Answer:
Step-by-step explanation:
the average rate of change is the same as
the slope of a line m = (y2-y1)/(x2-x1)
to find if is positive of negative look at the line between the years given (for example between 1930 and 1940)
if from left to right the line goes downward the rate of change is negative
if from left to right the line goes upward the rate of change is positive
Check the picture below.
in a parallelogram, there are two pairs of parallel sides, so in this case, namely since A and C are on opposite ends of the diagonal, that means that the segment AB is the one that's parallel to CD, and of course, AD is parallel to BC.
in order to maintain the same "slant" or slope, that way the sides are indeed parallel, since parallel sides have the same slant, we can just check how much is it horizontally from B to C, and then how much is it from there up to C, vertically.
if we move the same quantities horizontally and vertically, from A, we will end up at D, while maintaning the slant.
so... notice in the picture the blue distances from B up to C, we move that much in the red distances from A up to D.
what are the coordinates of D? well, ok, add them up.
2/4=8/16
this is the answer because 2×4=8 and 4×4=16 which is 8/16 this is a example
Answer:
246
Step-by-step explanation:
next time use a calculator
divide 492 by 2 and you get 246
divide that by 2 and you get 123
and divide that by 3 and you get 41
Y= -3x - 2
Step-by-step:
The points graphed are (0,-2) and (-1,1)
We can see that the point goes up by 3 and left by 1. Because the line is in hemispheres 2 and 4 mostly, it is a negative line.
The equation to find the coefficient of the variable x is rise/run. The line rises up three, and runs left negative. This makes that equation 3/-1, or simply -3 when simplified.
To find the term, we have to find where the line crosses the y axis. That’s when the x value of the point is 0. (0,-2) is where the line crosses the x axis, making the term -2.
So, y= -3x - 2